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<div class="sect1" lang="en">
<div class="titlepage"><div><div><h2 class="title" style="clear: both">
<a name="zend.feed.consuming-atom"></a>15.5. Consuming an Atom Feed</h2></div></div></div>
<p>
        <code class="code">Zend_Feed_Atom</code> is used in much the same way as <code class="code">Zend_Feed_Rss</code>. It provides
        the same access to feed-level properties and iteration over entries in the feed. The main
        difference is in the structure of the Atom protocol itself. Atom is a successor to RSS; it is more
        generalized protocol and it is designed to deal more easily with feeds that provide their full
        content inside the feed, splitting RSS' <code class="code">description</code> tag into two elements,
        <code class="code">summary</code> and <code class="code">content</code>, for that purpose.
    </p>
<div class="example">
<a name="zend.feed.consuming-atom.example.usage"></a><p class="title"><b>Example 15.2. Basic Use of an Atom Feed</b></p>
<div class="example-contents">
<p>
            Read an Atom feed and print the <code class="code">title</code> and <code class="code">summary</code> of each entry:
        </p>
<pre class="programlisting">&lt;?php

$feed = new Zend_Feed_Atom('http://atom.example.com/feed/');
echo 'The feed contains ' . $feed-&gt;count() . ' entries.' . "\n\n";
foreach ($feed as $entry) {
    echo 'Title: ' . $entry-&gt;title() . "\n";
    echo 'Summary: ' . $entry-&gt;summary() . "\n\n";
}</pre>
</div>
</div>
<br class="example-break"><p>
        In an Atom feed you can expect to find the following feed properties:
    </p>
<p>
        </p>
<div class="itemizedlist"><ul type="disc">
<li><p><code class="code">title</code> - The feed's title, same as RSS's channel title</p></li>
<li><p><code class="code">id</code> - Every feed and entry in Atom has a unique identifier</p></li>
<li>
<p><code class="code">link</code> - Feeds can have multiple links, which are distinguished by a
                <code class="code">type</code> attribute</p>
<p>
                    The equivalent to RSS's channel link would be <code class="code">type="text/html"</code>. If the link
                    is to an alternate version of the same content that's in the feed, it would have a
                    <code class="code">rel="alternate"</code> attribute.
                </p>
</li>
<li>
<p><code class="code">subtitle</code> - The feed's description, equivalent to RSS' channel description
                </p>
<p><code class="code">author-&gt;name()</code> - The feed author's name</p>
<p><code class="code">author-&gt;email()</code> - The feed author's email address</p>
</li>
</ul></div>
<p>
    </p>
<p>
        Atom entries commonly have the following properties:
    </p>
<p>
        </p>
<div class="itemizedlist"><ul type="disc">
<li><p><code class="code">id</code> - The entry's unique identifier</p></li>
<li><p><code class="code">title</code> - The entry's title, same as RSS item titles</p></li>
<li><p><code class="code">link</code> - A link to another format or an alternate view of this entry</p></li>
<li><p><code class="code">summary</code> - A summary of this entry's content</p></li>
<li><p><code class="code">content</code> - The full content of the entry; can be skipped if the feed just
                contains summaries</p></li>
<li><p><code class="code">author</code> - with <code class="code">name</code> and <code class="code">email</code> sub-tags like
                feeds have</p></li>
<li><p><code class="code">published</code> - the date the entry was published, in RFC 3339 format</p></li>
<li><p><code class="code">updated</code> - the date the entry was last updated, in RFC 3339 format</p></li>
</ul></div>
<p>
    </p>
<p>
        For more information on Atom and plenty of resources, see
        <a href="http://www.atomenabled.org/" target="_top">http://www.atomenabled.org/</a>.
    </p>
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